34 C01.0RAD0 Agricultural College \ 
f 
(Carex) found in red top, blue grass, white clover, barley, and ) 
Sudan grass. (Fig. 39). 
Fig-. 39. Sedges (Carex spp.) A. In 
Barley. B. In Sudan Grass. C. In White 
Clover. D. In Red Top. E. In Bluegrass. 
X 15. 
3. RUSH FAMILY 
(Jwicaccac) 
Ovary a 1-3-celled capsule 3-valved ; the minute embryo of the 
seed is enclosed by and at the base of the fleshy albumen; seeds 
three to many, often apiculate (with a minute point) or winged. 
1. Slender Rush (Juncus tenuis Willd.) 
(Fig. 40). — Seeds brick-red in color, apicn- 
late, transversely netted with fine lines, 
translucent, winged at the tips or throiighont 
the length of one side ; seeds nun. long, 
often adhering to ea( h other in groups or 
four or six. 
NETTLE FAMILY 
( Urticaccac ) 
Ovary l-(rarely 2-)celled forming a 1-seeded fruit ; fruit an 
achene ; endosperm scant, oily or wanting; embryo straight. 
C.v»xi? 
Fig. 40. Slender 
Rush (Juncus 
tenuis). x 35. 
4. 
